Please I need help to answer this question

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.

step-by-step explanation:

in which figure is point g a centroid

let m = monomial

let t = trinomial

so, m times t = t.

monomial times a trinomial = another trinomial.

898.1666667

step-by-step explanation:

5389/6 = 898.1666667